I am seeing recently that lactate threshold and FTP values detected by the device never gets updated to Garmin Connect under:
Reports > All activities > Functional Threshold Power
and
Reports > Running > Lactate Threshold
I have tried reporting the bug to Garmin's "Support Center" but three representatives all came back and kept repeating the same thing, none of them actually read the email properly.
This too may go nowhere, but just putting it out there.